But after Halloween, prices climb, Hopper said. Beginning in mid-November, the cost will go up about £3 a day and then spike in the final two weeks before Christmas, according to the app. If your plans are flexible, you can save a lot of dough by setting fare alerts, avoiding peak days and even considering alternatives to flying, according to Jacqui Gifford, a senior editor at Travel + Leisure.

Book over the phone: Sure, you can easily look up prices online, but if you’re booking a hotel, call and ask to speak to the manager or front desk to snag the best available rate. If you want to score a discount, a human might be more willing to work with you if they hear your story.

“On the Money” airs on CNBC Saturdays at 5:30 a.m. ET, or check listings for air times in local markets.